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<h2><b>exp</b></h2><p> 

<code>exp(<i>expr</i>)</code> <p>

Performs the <code>e**x</code> operation, where <code><i>expr</i></code>
is <code>x</code>. Works on both gridded and station data. 
<H3>Usage Notes</H3><P>
<H3>Examples</H3><P>
